VARIATIONS IN THE DORSAL PATTERN OF CYATHURA POLITA (STIMPSON) FROM ESTUARIES ALONG THE COASTS OF EASTERN UNITED STATES AND THE GULF OF MEXICO

1961 ◽  
Vol 121 (2) ◽  
pp. 257-264 ◽  
Author(s):  
W. D. BURBANCK ◽  
MADELINE P. BURBANCK
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Eastern United States ◽  
Dorsal Pattern

scholarly journals Investigating the Causes of Increased Twentieth-Century Fall Precipitation over the Southeastern United States

2018 ◽  
Vol 32 (2) ◽  
pp. 575-590 ◽  
Author(s):  
Daniel A. Bishop ◽  
A. Park Williams ◽  
Richard Seager ◽  
Arlene M. Fiore ◽  
Benjamin I. Cook ◽  
...  
Keyword(s):  
United States ◽  
Twentieth Century ◽  
Gulf Of Mexico ◽  
Specific Humidity ◽  
Precipitation Trend ◽  
Eastern United States ◽  
Atmospheric Models ◽  
Coupled Models ◽  
Fully Coupled ◽  
Precipitation Trends

Abstract Much of the eastern United States experienced increased precipitation over the twentieth century. Characterizing these trends and their causes is critical for assessing future hydroclimate risks. Here, U.S. precipitation trends are analyzed for 1895–2016, revealing that fall precipitation in the southeastern region north of the Gulf of Mexico (SE-Gulf) increased by nearly 40%, primarily increasing after the mid-1900s. Because fall is the climatological dry season in the SE-Gulf and precipitation in other seasons changed insignificantly, the seasonal precipitation cycle diminished substantially. The increase in SE-Gulf fall precipitation was caused by increased southerly moisture transport from the Gulf of Mexico, which was almost entirely driven by stronger winds associated with enhanced anticyclonic circulation west of the North Atlantic subtropical high (NASH) and not by increases in specific humidity. Atmospheric models forced by observed SSTs and fully coupled models forced by historical anthropogenic forcing do not robustly simulate twentieth-century fall wetting in the SE-Gulf. SST-forced atmospheric models do simulate an intensified anticyclonic low-level circulation around the NASH, but the modeled intensification occurred farther west than observed. CMIP5 analyses suggest an increased likelihood of positive SE-Gulf fall precipitation trends given historical and future GHG forcing. Nevertheless, individual model simulations (both SST forced and fully coupled) only very rarely produce the observed magnitude of the SE-Gulf fall precipitation trend. Further research into model representation of the western ridge of the fall NASH is needed, which will help us to better predict whether twentieth-century increases in SE-Gulf fall precipitation will persist into the future.

scholarly journals SOUTHERNMOST OCCURRENCE OF THE SUWANNEE COOTER, PSEUDEMYS CONCINNA SUWANNIENSIS (TESTUDINES: EMYDIDAE)

2015 ◽  
pp. 53-59 ◽  
Author(s):  
George L. Heinrich ◽  
Dale R. Jackson ◽  
Timothy J. Walsh ◽  
David S. Lee
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Northwest Coast ◽  
Eastern United States ◽  
Southern Limit ◽  
The Status ◽  
Northeastern Gulf Of Mexico ◽  
Conservation Concern

The Suwannee Cooter, Pseudemys concinna suwanniensis, the largest member of the speciose turtle family Emydidae, inhabits a small number of rivers that drain into the northeastern Gulf of Mexico along the northwest coast of Florida from just west of Tallahassee to just south of Tampa. The status of this state-protected subspecies in the southernmost of these rivers, the Alafia, is unknown and hence of conservation concern. We provide recent evidence confirming that a reproducing population still exists in this river, and review available specimens and both published and unpublished records documenting the southern limit of distribution. At least within the eastern United States, our observations also extend confirmed knowledge of the geographic occurrence of hatchling turtles overwintering in the nest southward by 285 km.

scholarly journals Marine leeches of the eastern United States and the Gulf of Mexico with a key to the species

1975 ◽  
Vol 9 (6) ◽  
pp. 633-667 ◽  
Author(s):  
Roy T. Sawyer ◽  
Adrian R. Lawler ◽  
Robin M. Oversrteet
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Eastern United States

scholarly journals The Distribution of Giant Manta Rays In The Western North Atlantic Ocean Off The Eastern United States

2021 ◽  
Author(s):  
Nicholas A. Farmer ◽  
Lance P. Garrison ◽  
Calusa Horn ◽  
Margaret Miller ◽  
Timothy Gowan ◽  
...  
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Mississippi River ◽  
Oil And Gas ◽  
North Atlantic Ocean ◽  
Shelf Edge ◽  
Eastern United States ◽  
Multiple Sources ◽  
Cape Hatteras ◽  
Manta Birostris

Abstract In 2018, the giant manta ray (Manta birostris) was listed as threatened under the U.S. Endangered Species Act. We integrated decades of sightings and survey effort data from multiple sources in a comprehensive species distribution modeling (SDM) framework to evaluate the distribution of giant manta rays off the eastern United States, including the Gulf of Mexico. Manta rays were most commonly detected at productive nearshore and shelf-edge upwelling zones at surface thermal frontal boundaries within a temperature range of approximately 15–30 °C. SDMs predicted high nearshore concentrations off Northeast Florida during April, with the distribution extending northward along the shelf-edge as temperatures warm, leading to higher occurrences north of Cape Hatteras, North Carolina from June to October, and then south of Savannah, Georgia from November to March as temperatures cool. In the Gulf of Mexico, the highest nearshore concentrations were predicted near the Mississippi River delta from April to June and again from October to November. SDM predictions will allow resource managers to more effectively protect manta rays from fisheries bycatch, boat strikes, oil and gas activities, contaminants and pollutants, and other threats.

The Path of the Atlantic Hurricane of September 1947 in Relation to the Hemispheric Circulation

1947 ◽  
Vol 28 (10) ◽  
pp. 447-452 ◽  
Author(s):  
William H. Klein ◽  
Jay S. Winston
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Short Range ◽  
Large Scale ◽  
Weather Forecasting ◽  
Atlantic Coast ◽  
September 11 ◽  
Eastern United States ◽  
Absolute Vorticity ◽  
Atlantic Hurricane

The movement of the Atlantic hurricane of September 11–20, 1947, into the Gulf of Mexico rather than up the Atlantic Coast, is attributed to dynamic anticyclogenesis over the eastern United States. An attempt is made to explain this anticyclogenesis by the transfer of energy downstream from the mid-Pacific at a rate considerably greater than the speed of individual air particles. The motion and change in intensity of 700 mb trough and ridge systems are discussed in terms of constant absolute vorticity, horizontal temperature advection, and the process of confluence. It is concluded that the large-scale features of the hemispheric circulation are of great importance for short-range, as well as for extended, weather forecasting.

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